Study on the Correlation between the Treatments with Different Grafting Methods and Growth Regulators and the Grafting Survival Rate of Baiyumang

[Objective] The research aimed to study the effects of the synergistic action of grafting method and growth regulator on the grafting survival rate of Baiyumang and provide the theoretical foundation for breeding the seedlings of Baiyumang.[Method] With one-year-old seedlings of local mango in Hainan as rootstock and one-year-old branches of Baiyumang as scions,the scions of Baiyumang were treated with different concn.of growth regulators ABT(250,500,1 000 mg/L)and IBA(50,100,200 mg/L) to make grafting by using 2 kinds of grafting methods including patch budding and cleft grafting.[Result] Among all kinds of treatments,the grafting survival rate in the cleft grafting treatment with 500 mg/L ABT was highest(73.3%).The effect of bud grafting with 100 mg/L IBA was better(60.0%).The grafting survival rate in the cleft grafting treatment with 100mg/L IBA was better.[Conclusion] The grafting survival rate in above 3 kinds of good treatments of combining the 2 kinds of growth regulators and 2 kinds of grafting methods including patch budding and cleft grafting had significant difference from that in control group with clean water by the corresponding method,which was simple to operate and could be popularized and applied in the production.